Magnetic separator.



L. L. MILLER. MAGNETIC SEPARATOH. APPLICATION FILED DIC.2l 19.09.

' Patented Aprfls, 1915.

2 SHEETS-SHEET 1.

En srA'rns Parana rien.

JOSEPH L. KILLER, OF MATTAPOISETT, MASSACHUSTTS.

MAGNETIC snraaaron.

Specification of Letterslatent. Patented pr, 13,

Application filed December 24, 1909. SerialNo. 534,816.

T0 all whom it may concern Be it known that I, Josnrrr L. HILLER, a citizen of the United States, residing vat Mattapoisett, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Magnetic Separatore, of` which the following is a specification.

This invention relates to improvements in magnetic separators designed chiefly for use in separating from coal, on its way t0 a 'Crusher or pulverizer, all hitchings, coufeed of material to the Crusher and discharge Such 'particles and bodies from the magnets', which stoppage of operations of feeding' and crushing is objectionable and expensive.

It is one object of the present invention to Aobviate this, and to that end`the invention consists in providing an electromagnet or electromagnets which are movable into activeposition to collect the magnetic material which may be present in the coa-l or other material to be crushed and into inac'- tive or discharging position to discharge the.

collected magnetic material.

'When the magnetic field is moved to discharging position, the energizing current will be broken or cut oil", so that the collected material may be freely discharged. .This cutting off -of the current, and the reestablishment thereof when -the magnets are moved or adjusted to operative collecting position, may be accomplished manually by a switch or automatically by providing the handle by which the magnets are shifted with means for breaking and establishing the current. I

'lt is another object of the invention to facilitate the separation by agitating the material to so dispose the magnetic substances iu. the mass that there will be least interference with the magnetic action.

n the accompanying drawings illustratpartly in elevation and partlyin section,- illustratingone embodimentof the invention. Fig. 2 is a detail showingthe handle on the magnet axle for throwing the magnets into vcollecting and discharging positions, and showing conventionally, a switch` for controlling the current of the magnets. In the drawings, the reference numeral 1 designates a 'conveyer belt trained about drums 2, 3, and adapted to carry. the mate- .rial to be crushed on its w'ay to a crushing machine. If desired, the drum 3 at the discharge end of the conveyer belt may be magnetic to attract to the'conveyer magnetic substances which it` is desired to separate out of the material going to the machine,

and in that event a catcher 4 is disposed' beneath the conveyer belt` intowhich the material attracted by the magnetic beltdrum drops after passing out of the magnetic, zone of the ydrumgand is conveyed away to any suitable depository or place. Arranged at a 'suitable point in the travel of the material on its Way to the crushing machine I provide an' electromagnet 5,.or preferably a series of electromagnets, to collect the magnetic substances thatmay be present in the material to be crushed, and which it is Idesired to separate therefrom.

Such magnet or magnets may, as shoWnin Fig. 1, be arranged to collect the magnetic substances as the material v'leaves the conveyer or belt, in' Whichevent each electromagnet may have a duplex collecting .pole or surface 5a, 5b in stepped relation, so that' should magnetic material, for any reason, not beheld by the one collecting pole or surface, it will be attracted and collected by the other pole or surface. In each instance,

however, the electromagnet or magnets are movably mounted so that they may be moved into active or collecting positiony or inteinactive or discharging position. As shown the magnets aregcarred by a rotating or rocking shaft 6 arranged in juxtaposition to a discharging slide 7, so that by rotation of said shaft the magnets may be brought into active position to collect the magnetic material, as illustrated infull lines,and when material has accumulated upon the magnet or magnets inalcingit desirable to discharge the same therefrormsaid magnet or .magnets may be rotated tothe positi'onillustrated in dotted lines to discharge the collectedmaterial onto the slide. This may be done very ics quickly, so that there is little liability ot any undesirable magnetic material passing the zone of the magnets during the operation of discharging, and, if desired, the arrangement of magnets could be duplicated to 'take care of any such contingency.

be accomplished by a switch shown conven- As before stated, when the magnets are moved to discharging position the energizing current is cut oil so that the'collected particles are free to immediately leave the magnets and fall into the slide. This may tionally at 8, Fig. 2, or in any other suitable Way Within the skill and knowledge oit electricians.

During the time themagnets are in the position shown in dotted lines in lfig. l.

and the energizing current thereof out out to discharge the magnetic material there from, the material discharged from the conveyer 1 may be deflected and directed With certainty into the chute 15 and pre'- vented from going with the magnetic material into' the chute 7. This may be conveniently accomplished by a plvotcd delector 16, Fig. 1, controlled by an operating handle 17. As shown in this figure, thev deflector is arranged so that the magnets may attract magnetic material'I l thereto. When this'material is-to be dumped, the

' deflector is moved inward to guide the masecured. iIn Fig. 2 is illustrated such an operating handle Working over a quadrant 10 provided with a notch into which a lock" ing dog 11 carried by the handle engages `when the magnets are in collecting position. The current for the magnets. may be taken in any suitable way, for example, as

shown conventionally in F ig. 2, by collectors or brushes 12.

As shown in 141g.

. may be carried in movable slides 13, so that the magnets-may be adjusted toa position4 With relation to the path of the material to secure best results under varying circumstances.

To facilitate the separation of" the magnetic material., the mass of material on.the

conveyer maybe agitated. by means otagitating lingers 18 carried by rock shafts 19,

the ends ot said fingers projecting into the path of the material on the .conveyor l, agi- 2, the magnet shaft 6,'

iasaeie ftating the saine to allow the magnetic ma terial which is et greater specific gravity to find its Way to the bottom et the mass, and thus be in best positionlfor the magnetic attraction et the drinn 3. Thesciingors are preferably arranged in a plurality oi series, those on one shaft being in staggered relation with like lingers on the next adjacent shaft, said shaitts having allxed to their ends arms 20, the free ends of which are connected .by springs 21 to the framework of the' machine, by which the agitating lingers are yieldingly held to their Work.

22 designates a spreader carried by independently yieldable hangers which are movable in brackets i2-l and surrounded by spring bearing against nuts on the hangers and said `bracl;e'ts.r This spreader serves to evenly dispose or lav the material on the conveyer.

Ylaving thus described the invention What is claimed is,-

1. ln a magnetic separator, an electromagnet a conveyor for delivering material to be separated directly on to the poles oli said electro-magnet, means :tor moving said electro-magnet into the path of the material discharged 'from 'said' conveyor to collect magnetic material therefrom, .and out of said path 'to discharge themagnetic material 'from the poles tol said-magnet, and

movable means tor detlecting material delivered by said conveyer away from the electro-magnet when the latter is in its dis charging position..

2. A. magnetic separator comprising sta- 'titi tionary magnets having upwardly disposed adjoining inclined magnetic collecting surfaces, means for directing 'material to be operated upon to the uppermost of said surfaces and permitting it to fall thereon by gravity, means for receiving` such' other material as passes over the .collecting surion faces of said magnets, means for receiving the material collected on saidsurfaces, means for moving said magnets away from the flow of said material for discharging the magnetic 'substances collected thereon, and meansfor breaking the electric circuit through said magnets when moved to dis charging position.

In. testimony Whereol have hereunto set my hand in 'presence of two subscribing Witnesses.

aosnrri L. manna.

Witnesses;

ARTHUR L. BRYANT, Gao. W.. Rua.

ira 

